<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>社交滑动图标</title>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">
    <link rel="stylesheet" href="./社交滑动图标.css">
</head>
<body>
    <ul>
        <li>
            <a href="#">
                <i class="fa fa-linkedin" aria-hidden="true"></i>
                <i class="fa fa-linkedin" aria-hidden="true"></i>
            </a>
        </li>
        <li>
            <a href="#">
                <i class="fa fa-id-card-o" aria-hidden="true"></i> 
                <i class="fa fa-id-card-o" aria-hidden="true"></i> 
            </a>
        </li>
        <li>
            <a href="#">
                <i class="fa fa-birthday-cake" aria-hidden="true"></i>
                <i class="fa fa-birthday-cake" aria-hidden="true"></i>
            </a>   
        </li>  
        <li>     
            <a href="#">
                <i class="fa fa-envelope-open" aria-hidden="true"></i>
                <i class="fa fa-envelope-open" aria-hidden="true"></i>
            </a>
        </li> 

    </ul>
    
</body>
</html>